Bobbin



H. C. MACK June 8, 1937.

BOBBIN Filed Feb. 14. 1956 nuvENToia m. m m f n Patented June 8, 1937BOBBIN Harry C. Mack, Allentown, 12a., assignor to Ther Allentown BobbinWorks,- Inc., Allentown, Pa., a corporation of Pennsylvania ApplicationFebruary 14, 19?'6, serial No. 63,845 comms. (armani) The presentinvention relates to bobbins and more particularly to a bobbin of thehollow type which in use is subjected to the action of steam.

Heretofore hollow barrel bobbins for general steaming purposes have notproven satisfactory due to the fact that the bearing bushing has beenfastened in place by glue and hence expansion and contraction occurs byreason of steam contact. This is a serious disadvantage and has l0presented a problem not heretofore successfully solved. Also woodencores of the bobbin barrel have served to mount the bobbin heads andsince these cores are of wood and subjected to steam.

they soon become misshapen with the result the bobbins have an eccentricmotion .on the spindles. Some of the objects of the present inventionare to provide an improved bobbin; to provide a new and novel bobbinconstruction for general steam purposes; to provide animproved hollowbarrel bobbin; to provide means for permanently holding bearing bushingsin place within a bobbin barrel; to provide a head mounting for bobbinswherein provision is made for also preventing the bobbin bushings frombecoming loose; to 5 provide an improved head bearing for bobbinspindles, and to provide other improvements as will hereinafter appear.

In the accompanying drawing Fig. 1 represents a perspective of a bobbinembodying one 0 form of the present invention; Fig. 2 represents asectional elevation of the same; Fig. 3 represents a section on line 3 3of Fig. 2; Fig. 4 represents a section similar to Fig. 2 showing theparte ready for assembly; and Fig. 5 represents a sectional detail of amodied head construction.

Referring to the drawing'one form of the present invention is shown asapplied to a hollow bobbin I@ of the type employed for steam treat--ment of the yarn, thread or other material wound on the bobbin. Thebobbin I0 consists of a tubular barrel II having in the present instancea cylindrical bore l2 of relatively large diameter which has a reducedportion I3 at one end to form a bearing for the spindle upon which thebobbin is to be mounted. Radially arranged holes It form passages forthe passage of steam from the bore I2 to the outer periphery of the bodyII.

For the purpose of providing a bearing at the endof the barrel Ilopposite to that havingthe bore I3, a bushing l5 is provided having adiameter to t snugly in the end of the bore I2. A bearing bore I6extends longitudinally of the bushing I5 and is of the required diameterto receive, in bearing relation, the other end of the spindle heretoforereferred to. f In the preferred form ofthe invention the bushing end ofthe body I I is provided with a circular recess Il concentricallyarranged with respect to the bore I2 and of a depth to seat a circularflange I8 formed on the outer end of the bushing I5. In assembledcondition the outer face of the ange i8 is flush with the face of therecessed end of the body I l. The body II and the bushing I5 arepreferably of wood, but any material suitable for the purpose l0 andcapable of withstanding hard use may be ernployed.

To complete the bobbin the ends of the barrel II have attached heads2li, preferably of fibre or bakelite, each of which has a centrally 15located bearing hole 2l for the passage of the bobbin spindle. Inassembled condition the holes 2| are exactly alined with the axis of thebore I2. Screws, nails or other fastening devices 22 secure the heads tothe barrel il. In this con- 20 nection it should be noted that eachfastening device 22 passes through the ange I8 of the bushing I5 beforeentering the barrel II and therefore, not only anchors the bushing I5fast to the barrel I I, but also prevents rotation thereof relative tothe barrel. 'Ihus the fastening devices 22 have the double function ofmounting the heads 2G land anchoring the bushing I 5. Preferably alsothe bushing I5 is glued along its joint with the barrel Il. 30

In bobbins as heretofore constructed it has been the practice to mountthe bobbin heads on end core extensions and since these are of wood thespindle bearing hole therein soon becomes enlarged and out of shapecausing the bobbin to 35 rotate out of balance and wobble on thespindle. By the present invention this is entirely overcome because thefibre or bakelite heads bear directly on the spindle and are not subjectto the wear which is present in the use of wood. 40

A modified form `of the invention is shown in Fig. 5 wherein a solidbobbin barrel 23 has a spindle bore 24 therethrough. In thisvconstruction each head 25 has a spindle hole 2t of the same diameter asthe bore 2d and alined there- 45 with toprovide a non-wear bearing forthe spindle at each end of the barrel 23. Preferably also each head 25is provided with a circular groove 2l to receive the complementaryshaped extension 28 formed on the end of the barrel 23. 50 Nails orscrews 29 hold the heads fast to the barrel 23.

It will now be apparent that a complete unitary bobbin has been devisedwherein a bearing bushing is permanently locked to the bobbin body in 55such a manner that itis not subject to displacement due to expansion andcontractionrcausedby subjecting the body to the action of steam. Fur-Vthermore a non-wearing support has'Y been pro- 5 vided for the ends Vofthe bobbingspindle, thereby Y overcoming the objections anddisadvantages of a Wooden support for the spindle.

While onlytwo forms are shown inrwhich this Y, Y invention may beVembodied, it is to be understood 10 that the invention is not limited toany specific y construction, but might be applied to various formswithout Adeparting from the spirit of the invention or the scope of theappended claims.'Y

vHaving thus described my invention, I c1aim:-,V 15 1. Arbobbinconsisting of a barrel having a bore therethrough and a recess at oneend, means forming a spindle bearing at one end ,of `said. bore, abushing located in the other end of said bore to form a second spindlebearing, said bush-` 20 ing having its outer end ush with the adjacentend of said barrel, a ange on said bushing-seat'- ing in said recess, 'ahead, means to attachl said head to one endrofV said barrel, a secondhead seating vagainst said barrel and said bushing to conceal thebush/ing and vbarrel assembly, and

l means passing through said second head and said flang'einto saidbarrelforlocking said parts together. f Y 2. A bobbin consisting ofrahollow barrel having arbore therethrough and a recess at one end,

Vmeans forming a spindle bearing at one endvof said bore, a bushinglocated in the other end'of said bore to form a second spindle bearing,said Vbushing having its outer vend flush with the adjacent end of saidbarrel, means toattach said bushing to said barrel, a Vflange on saidbushing means passing through said second head and said Vange into saidbarrel forY locking said parts together.

Y HARRY vC. MACK.

